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Sequence
Byte
Bit
#
#
8
1
IP_SERVO_
LOW
66
8
2
IP_SERVO_
HIGH
67
8
3
LINKAGE_
DRIFT
68
8
4
VALVE_
STUCK_
CLOSED
69
150 |
=GE Oil & Gas
Table 12 SVI II ESD Fault Matrix (Continued)
FAULT Name
Criticality
of Alarm
1
2
1
1
Auto-
Can be
Non-
mati-
cleared/
Mas-
cally
Persists
kable/
cleared
across
Annunci-
resets
ated
No
Yes/No
No/Yes
No
Yes/No
No/Yes
Yes
Yes/No
Yes/No
Yes
Yes/No
No/Yes
TEXT For
Probable Cause
DD &
English
ValVue
ESD2
English
Low I/P
1- The required I/
Output
P current is too
Pressure
low to ensure
venting of the
relay.
2- The I/P flexure
is pushed against
the nozzle.
3- Faulty I/P flow
regulator.
High I/P
1- The required I/
Output
P current is too
Pressure
high to maintain
output pressure
to actuator.
2- The I/P flexure
is pushed away
from the nozzle.
Feed-
1-In the fully open
back
or fully closed
Linkage
position a raw
Drift
travel sensor
count deviation of
x% exists against
the calibrated
stop value.
Valve
1- A handwheel is
Stuck
left engaged.
Closed
2- Valve is seized
in place.
3- Insufficient
actuator thrust.
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Recommended
Action
1,2,3 - Service
required. Contact
the factory.
1,2 - Service
required. Contact
the factory.
1 - Verify that link-
age is well fas-
tened.
2- Re-run the Find
Stops method.
When device goes
in Failsafe when
running the Find
Stop method,
clear alarm and
rerun the stops.
1- Verify presence
of a mechanical
stops such as a
handwheel.
2- Repair valve.
3- Run a PST or
Extended signa-
ture. If friction is
abnormal then
overhaul valve.
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Table of Contents
Troubleshooting
